/* roulang page: index */
:root{
      --bg:#FAF7F2;
      --surface:#FFFDF8;
      --surface-2:#F3EDE2;
      --text:#12131A;
      --muted:#696E7A;
      --line:rgba(18,19,26,.10);
      --primary:#7B263A;
      --primary-2:#A33E53;
      --accent:#D8A84E;
      --accent-2:#FFCF6C;
      --success:#2F8F76;
      --radius:24px;
      --radius-lg:34px;
      --shadow:0 18px 50px rgba(18,19,26,.09);
      --shadow-strong:0 28px 90px rgba(123,38,58,.18);
      --container:1180px;
      --ease:cubic-bezier(.2,.8,.2,1);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      background:
        radial-gradient(circle at 8% 4%, rgba(216,168,78,.22), transparent 28%),
        radial-gradient(circle at 90% 8%, rgba(123,38,58,.16), transparent 30%),
        linear-gradient(180deg, #fffaf0 0%, var(--bg) 45%, #f7efe6 100%);
      color:var(--text);
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      line-height:1.7;
      min-height:100vh;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    button{border:0;background:none;cursor:pointer}
    ::selection{background:rgba(216,168,78,.35)}
    .site-container{width:min(var(--container), calc(100% - 40px));margin-inline:auto}
    .skip-link{position:absolute;left:-999px;top:14px;z-index:999;padding:10px 14px;background:var(--text);color:#fff;border-radius:14px}
    .skip-link:focus{left:14px}
    .topbar{
      position:sticky;top:0;z-index:60;
      background:rgba(250,247,242,.78);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(18,19,26,.08);
    }
    .nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between;gap:18px}
    .brand{
      display:inline-flex;align-items:center;gap:12px;font-weight:900;letter-spacing:-.02em;
      color:var(--text);
    }
    .brand-mark{
      width:42px;height:42px;border-radius:16px;
      background:linear-gradient(145deg,var(--primary),#3b1320 65%,var(--accent));
      display:grid;place-items:center;color:#fff;font-weight:900;
      box-shadow:0 14px 30px rgba(123,38,58,.25);
    }
    .brand-name{font-size:18px;white-space:nowrap}
    .top-actions{display:flex;align-items:center;gap:12px}
    .menu-button,.icon-button{
      min-width:46px;height:46px;border:1px solid var(--line);border-radius:999px;
      background:rgba(255,253,248,.74);display:inline-flex;align-items:center;justify-content:center;
      transition:transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease);
    }
    .menu-button:hover,.icon-button:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:rgba(123,38,58,.22);background:#fff}
    .menu-button:focus-visible,.icon-button:focus-visible,.btn:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid rgba(216,168,78,.45);outline-offset:3px}
    .hamb{width:20px;height:14px;position:relative;display:inline-block}
    .hamb::before,.hamb::after,.hamb span{content:"";position:absolute;left:0;width:100%;height:2px;border-radius:999px;background:var(--text);transition:.25s var(--ease)}
    .hamb::before{top:0}.hamb span{top:6px}.hamb::after{bottom:0}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:9px;
      min-height:46px;padding:0 18px;border-radius:999px;font-weight:800;
      border:1px solid transparent;transition:transform .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
      white-space:nowrap;
    }
    .btn-primary{background:var(--primary);color:#fff;box-shadow:0 14px 36px rgba(123,38,58,.24)}
    .btn-primary:hover{transform:translateY(-2px);background:var(--primary-2);box-shadow:0 18px 46px rgba(123,38,58,.30)}
    .btn-soft{background:#fff;color:var(--primary);border-color:rgba(123,38,58,.14)}
    .btn-soft:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:rgba(123,38,58,.26)}
    .btn-dark{background:var(--text);color:#fff}
    .btn-dark:hover{transform:translateY(-2px);background:#2a2b33;box-shadow:0 16px 38px rgba(18,19,26,.2)}
    .drawer{
      position:fixed;inset:0;z-index:80;pointer-events:none;
    }
    .drawer.is-open{pointer-events:auto}
    .drawer-backdrop{position:absolute;inset:0;background:rgba(18,19,26,.48);opacity:0;transition:opacity .28s var(--ease)}
    .drawer.is-open .drawer-backdrop{opacity:1}
    .drawer-panel{
      position:absolute;right:0;top:0;height:100%;width:min(520px,100%);
      background:linear-gradient(180deg,#fffdf8 0%,#f7efe6 100%);
      box-shadow:-28px 0 70px rgba(18,19,26,.18);
      transform:translateX(105%);transition:transform .32s var(--ease);
      padding:28px;display:flex;flex-direction:column;
    }
    .drawer.is-open .drawer-panel{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:24px;border-bottom:1px solid var(--line)}
    .drawer-nav{display:grid;gap:12px;padding:30px 0}
    .drawer-link{
      display:flex;align-items:center;justify-content:space-between;
      padding:18px 18px;border-radius:20px;background:#fff;border:1px solid var(--line);
      font-size:20px;font-weight:900;transition:.25s var(--ease);
    }
    .drawer-link:hover,.drawer-link.active{background:var(--text);color:#fff;transform:translateX(-4px);border-color:var(--text)}
    .drawer-note{margin-top:auto;border-radius:24px;padding:20px;background:rgba(123,38,58,.08);border:1px solid rgba(123,38,58,.12);color:var(--muted)}
    main{overflow:hidden}
    section{position:relative}
    .section-pad{padding:82px 0}
    .section-kicker{
      display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;
      background:rgba(216,168,78,.14);color:#765321;border:1px solid rgba(216,168,78,.26);
      font-size:13px;font-weight:900;letter-spacing:.04em;
    }
    .section-title{font-size:clamp(30px,4vw,52px);line-height:1.12;letter-spacing:-.04em;font-weight:950;margin:16px 0 0}
    .section-desc{max-width:760px;color:var(--muted);font-size:17px;margin-top:16px}
    .hero{padding:66px 0 86px}
    .hero-grid{
      display:grid;grid-template-columns:250px minmax(0,1fr) 250px;gap:24px;align-items:center;
    }
    .hero-side{display:grid;gap:16px}
    .value-pill{
      background:rgba(255,253,248,.78);border:1px solid var(--line);border-radius:24px;padding:18px;
      box-shadow:0 12px 36px rgba(18,19,26,.06);
      transition:transform .25s var(--ease), box-shadow .25s var(--ease);
    }
    .value-pill:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
    .value-pill b{display:block;font-size:16px;margin-bottom:6px}
    .value-pill span{display:block;color:var(--muted);font-size:14px;line-height:1.55}
    .hero-center{text-align:center}
    .hero h1{
      max-width:860px;margin:18px auto 0;
      font-size:clamp(38px,6vw,76px);line-height:1.03;letter-spacing:-.06em;font-weight:950;
    }
    .hero-lead{
      max-width:760px;margin:22px auto 0;color:#4e5260;font-size:18px;line-height:1.85;
    }
    .hero-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:28px}
    .stage{
      margin:38px auto 0;max-width:820px;border-radius:36px;padding:12px;
      background:linear-gradient(145deg,rgba(255,255,255,.86),rgba(216,168,78,.18));
      border:1px solid rgba(255,255,255,.7);box-shadow:var(--shadow-strong);
      position:relative;
    }
    .stage::before,.stage::after{content:"";position:absolute;border-radius:999px;filter:blur(18px);opacity:.7;z-index:-1}
    .stage::before{width:160px;height:160px;background:rgba(216,168,78,.35);left:-30px;bottom:20px}
    .stage::after{width:190px;height:190px;background:rgba(123,38,58,.22);right:-24px;top:14px}
    .screen{
      overflow:hidden;border-radius:28px;background:#171821;color:#fff;border:1px solid rgba(255,255,255,.16);
      min-height:318px;text-align:left;
    }
    .screen-top{display:flex;align-items:center;justify-content:space-between;padding:16px 18px;border-bottom:1px solid rgba(255,255,255,.10)}
    .dots{display:flex;gap:7px}.dots i{width:10px;height:10px;border-radius:50%;background:#ffcf6c}.dots i:nth-child(2){background:#e26d86}.dots i:nth-child(3){background:#65d6b5}
    .screen-body{display:grid;grid-template-columns:1.1fr .9fr;gap:18px;padding:22px}
    .screen-card{border-radius:22px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.10);padding:18px}
    .bars{display:grid;gap:10px;margin-top:18px}.bar{height:10px;border-radius:999px;background:rgba(255,255,255,.12);overflow:hidden}.bar span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--accent),#fff1b6)}
    .mini-list{display:grid;gap:10px}.mini-item{display:flex;justify-content:space-between;gap:12px;padding:12px;border-radius:16px;background:rgba(255,255,255,.07);font-size:13px}
    .badge{
      display:inline-flex;align-items:center;gap:7px;padding:7px 11px;border-radius:999px;
      background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.12);color:#fff;font-weight:800;font-size:12px;
    }
    .stats-strip{
      margin-top:24px;display:grid;grid-template-columns:repeat(3,1fr);gap:12px;
    }
    .stat{
      border:1px solid var(--line);background:rgba(255,253,248,.82);border-radius:22px;padding:18px;text-align:center;
    }
    .stat strong{display:block;font-size:28px;line-height:1;color:var(--primary);letter-spacing:-.04em}
    .stat span{display:block;margin-top:7px;color:var(--muted);font-size:13px}
    .story-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:34px;align-items:end}
    .story-card{
      border-radius:var(--radius-lg);background:var(--text);color:#fff;padding:34px;box-shadow:var(--shadow);
      min-height:360px;display:flex;flex-direction:column;justify-content:space-between;overflow:hidden;position:relative;
    }
    .story-card::after{content:"";position:absolute;width:260px;height:260px;border-radius:50%;right:-80px;bottom:-90px;background:rgba(216,168,78,.24)}
    .story-card p{color:rgba(255,255,255,.72);position:relative;z-index:1}
    .timeline{display:grid;gap:14px}
    .timeline-item{display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:start;padding:18px;border:1px solid var(--line);border-radius:24px;background:rgba(255,253,248,.82)}
    .timeline-num{width:38px;height:38px;border-radius:14px;background:rgba(216,168,78,.18);display:grid;place-items:center;font-weight:950;color:#815719}
    .cards-mix{display:grid;grid-template-columns:1.2fr .8fr;gap:20px;margin-top:34px}
    .feature-large,.feature-card{
      background:rgba(255,253,248,.86);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px;box-shadow:0 12px 34px rgba(18,19,26,.05);
      transition:transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease);
    }
    .feature-large:hover,.feature-card:hover,.bubble:hover,.news-panel:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(123,38,58,.16)}
    .feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
    .icon{
      width:46px;height:46px;border-radius:17px;background:linear-gradient(145deg,rgba(123,38,58,.12),rgba(216,168,78,.22));
      display:grid;place-items:center;font-size:22px;margin-bottom:16px;
    }
    .comparison{padding:74px 0}
    .compare-box{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:32px}
    .compare-col{border-radius:var(--radius-lg);padding:26px;border:1px solid var(--line);background:#fff}
    .compare-col.good{background:linear-gradient(180deg,#fffdf8,rgba(216,168,78,.12));border-color:rgba(216,168,78,.35)}
    .check-list{display:grid;gap:12px;margin-top:18px;color:var(--muted)}
    .check-list li{display:flex;gap:10px;align-items:flex-start}
    .check-list li::before{content:"✓";flex:0 0 24px;width:24px;height:24px;border-radius:999px;background:rgba(47,143,118,.12);color:var(--success);display:grid;place-items:center;font-weight:950;font-size:13px}
    .bubble-area{display:grid;grid-template-columns:1fr 1fr 1fr;gap:18px;margin-top:34px}
    .bubble{position:relative;border:1px solid var(--line);background:#fff;border-radius:28px;padding:24px;box-shadow:0 12px 34px rgba(18,19,26,.05);transition:.25s var(--ease)}
    .bubble::after{content:"";position:absolute;left:28px;bottom:-9px;width:18px;height:18px;background:#fff;border-right:1px solid var(--line);border-bottom:1px solid var(--line);transform:rotate(45deg)}
    .stars{color:#c78a21;letter-spacing:2px;font-size:14px;margin-bottom:12px}
    .trust-row{margin-top:28px;display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
    .trust-item{background:rgba(18,19,26,.04);border:1px solid var(--line);border-radius:20px;padding:16px;text-align:center}
    .trust-item strong{display:block;font-size:24px;color:var(--primary)}
    .news-wrap{display:grid;grid-template-columns:1.4fr .8fr;gap:22px;margin-top:34px}
    .news-panel{border:1px solid var(--line);background:#fff;border-radius:var(--radius-lg);padding:26px;transition:.25s var(--ease)}
    .news-list{display:grid;gap:0}
    .news-list a{display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:center;padding:16px 0;border-bottom:1px solid rgba(18,19,26,.08);transition:.22s var(--ease)}
    .news-list a:last-child{border-bottom:0}
    .news-list a:hover{color:var(--primary);transform:translateX(4px)}
    .news-date{font-size:13px;color:var(--muted);font-weight:800}
    .news-title{font-weight:850}
    .news-arrow{color:var(--accent);font-weight:950}
    .recommend{display:grid;gap:14px}
    .recommend a{padding:16px;border-radius:20px;background:rgba(216,168,78,.12);border:1px solid rgba(216,168,78,.20);transition:.22s var(--ease)}
    .recommend a:hover{background:rgba(123,38,58,.08);border-color:rgba(123,38,58,.18);transform:translateY(-2px)}
    .faq-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;align-items:start;margin-top:34px}
    .faq-list{display:grid;gap:14px}
    details{border:1px solid var(--line);background:#fff;border-radius:24px;padding:0;overflow:hidden;box-shadow:0 10px 26px rgba(18,19,26,.04)}
    summary{list-style:none;cursor:pointer;padding:20px 22px;font-weight:900;display:flex;justify-content:space-between;gap:16px}
    summary::-webkit-details-marker{display:none}
    summary::after{content:"＋";color:var(--primary);font-weight:950}
    details[open] summary::after{content:"—"}
    details p{margin:0;padding:0 22px 20px;color:var(--muted)}
    .subscribe-card{
      border-radius:42px;background:
        radial-gradient(circle at 10% 0%, rgba(255,207,108,.34), transparent 28%),
        linear-gradient(135deg,#24131a 0%,#7b263a 62%,#d8a84e 130%);
      color:#fff;padding:42px;box-shadow:var(--shadow-strong);overflow:hidden;position:relative;
    }
    .subscribe-grid{display:grid;grid-template-columns:1fr .9fr;gap:34px;align-items:center}
    .lead-form{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);border-radius:30px;padding:22px;backdrop-filter:blur(14px)}
    .form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .field{display:grid;gap:8px;margin-bottom:12px}
    .field label{font-size:13px;font-weight:850;color:rgba(255,255,255,.82)}
    .field input,.field textarea{
      width:100%;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.92);
      color:var(--text);border-radius:16px;padding:13px 14px;outline:0;
      transition:border-color .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease);
    }
    .field input:focus,.field textarea:focus{border-color:var(--accent-2);box-shadow:0 0 0 4px rgba(255,207,108,.20);background:#fff}
    .privacy{font-size:13px;color:rgba(255,255,255,.70);margin-top:12px}
    .form-message{min-height:22px;margin-top:10px;font-weight:850;color:#fff1b6}
    .footer{padding:46px 0 34px;border-top:1px solid var(--line);background:rgba(255,253,248,.55)}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:start}
    .footer-links{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
    .footer-links a{padding:9px 12px;border-radius:999px;background:rgba(18,19,26,.04);color:var(--muted);transition:.22s var(--ease)}
    .footer-links a:hover{background:var(--text);color:#fff}
    .copyright{margin-top:24px;padding-top:20px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;color:var(--muted);font-size:14px;flex-wrap:wrap}
    .float-cta{
      position:fixed;left:50%;bottom:18px;transform:translateX(-50%);z-index:50;
      width:min(620px,calc(100% - 28px));display:flex;align-items:center;justify-content:space-between;gap:14px;
      padding:10px 12px 10px 18px;border-radius:999px;background:rgba(18,19,26,.88);color:#fff;
      backdrop-filter:blur(12px);box-shadow:0 18px 60px rgba(18,19,26,.22);border:1px solid rgba(255,255,255,.12);
    }
    .float-cta span{font-weight:850;font-size:14px}
    @media (max-width:1024px){
      .hero-grid{grid-template-columns:1fr;gap:18px}
      .hero-side{grid-template-columns:repeat(2,1fr);order:2}
      .hero-center{order:1}
      .story-wrap,.cards-mix,.news-wrap,.faq-grid,.subscribe-grid{grid-template-columns:1fr}
      .compare-box,.bubble-area{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
      .footer-links{justify-content:flex-start}
    }
    @media (max-width:768px){
      .site-container{width:min(100% - 28px,var(--container))}
      .nav-wrap{height:68px}
      .brand-name{font-size:16px}
      .top-actions .btn-soft{display:none}
      .hero{padding:42px 0 66px}
      .section-pad{padding:62px 0}
      .screen-body{grid-template-columns:1fr}
      .stats-strip,.trust-row,.feature-grid{grid-template-columns:1fr}
      .hero-side{grid-template-columns:1fr}
      .subscribe-card{padding:28px;border-radius:30px}
      .form-row{grid-template-columns:1fr}
      .float-cta{border-radius:24px;align-items:flex-start;flex-direction:column;padding:14px}
      .float-cta .btn{width:100%}
    }
    @media (max-width:520px){
      .hero h1{font-size:38px}
      .hero-lead{font-size:16px}
      .hero-actions .btn{width:100%}
      .stage{border-radius:26px;padding:8px}
      .screen{border-radius:20px}
      .section-title{font-size:30px}
      .drawer-panel{padding:20px}
      .news-list a{grid-template-columns:1fr auto;gap:8px}
      .news-date{grid-column:1 / -1}
      .copyright{padding-bottom:98px}
    }
    @media (prefers-reduced-motion: reduce){
      *,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}
    }